<template>
    <div class="xtx-checkbox" @click="changeChecked()">
        <i v-if="checked" class="iconfont icon-checked"></i>
        <i v-else class="iconfont icon-unchecked"></i>
        <span v-if="$slots.default">
            <slot />
        </span>
    </div>
</template>
<script>
import { ref, watch } from 'vue'
export default {
    name: 'XtxCheckbox',
    props: {
        modelValue: {
            type: Boolean,
            default: false
        }
    },
    setup(props, { emit }) {
        const checked = ref(false)
        const changeChecked = () => {
            checked.value = !checked.value
            // emit通知父组件改变数据
            // v-model  ====>  :modelValue  +   @update:modelValue
            emit('update:modelValue', checked.value)
            emit('change',checked)
        }
        watch(() => props.modelValue, () => {
            checked.value = props.modelValue
        }, { immediate: true })

        return { checked, changeChecked }
    }
}
</script>
<style scoped lang="less">
.xtx-checkbox {
    display: inline-block;
    margin-right: 2px;

    .icon-checked {
        color: @xtxColor;

        ~span {
            color: @xtxColor;
        }
    }

    i {
        position: relative;
        top: 1px;
    }

    span {
        margin-left: 2px;
    }
}
</style>